This is a Bearing Pad Kit by Miller Industries. It includes all the partsnecessary to replace the wear pads on a 21′ & 22′ Aluminum Car Carrier. SeeFeatures for a list of parts that are included. Kit Includes The Following Components (2) 12-0302180: 216″ Nylatron Gs Bearing Pads (2) 12-0702517: 3/16″x1″x2 3/8″ Stop Bars (2) 12-0720452: 36″ Bearing Pads (2) 15-332052: Main Rail Stop Bar Aluminum BTM (2) 12-0302119: Bearing Pad 5/16X11/4X24 (2) 12-0302027: Miller Bearing Pad, Nylatron, 48″